Trait Negative Reputational Concerns Among In-group Members and In-group Favoritism in Minimal Groups

People tend to behave more cooperatively with in-group members than out-group members, even in minimal group situations. This study investigated the relationship between trait reputational concern (fear of negative evaluation) from and favoritism contexts. A total 176 participants completed hypothetical prisoner’s dilemma games; when reputation was at stake, significantly associated concern. In this context, greater concerns about resulted stronger favoritism. By contrast, under anonymity not related We also measured fear others, finding that correlated both others general as long stake.